Home / 13,251.96-18,280.08-8,275.32

Finding the Fourth Proportional to 13,251.96, 18,280.08 and 8,275.32

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Solution

The fourth proportional to 13,251.96, 18,280.08 and 8,275.32 is: 11,415.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.96 : 18,280.08 = 8,275.32 : x
  2. Step 2: Convert to fraction form
    13,251.96/18,280.08 = 8,275.32/x
  3. Step 3: Cross multiply
    13,251.96x = 18,280.08 × 8,275.32
  4. Step 4: Simplify right side
    13,251.96x = 151,273,511.63
  5. Step 5: Solve for x
    x = 151,273,511.63/13,251.96
  6. Step 6: Final answer
    x = 11,415.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.